306 citations · 1.1k across the 36 of their papers we have counts for
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Accretion process onto super-spinning objects
Cosimo Bambi, Katherine Freese, Tomohiro Harada +2
The accretion process onto spinning objects in Kerr spacetimes is studied with numerical simulations. Our results show that accretion onto compact objects with Kerr parameter (char…
Testing the Accretion Flow with Plasma Wave Heating Mechanism for Sagittarius a* by the 1.3MM Vlbi Measurements
Lei Huang, Rohta Takahashi, Zhi-Qiang Shen
The vicinity of the supermassive black hole associated with the compact radio source Sagittarius (Sgr) A* is believed to dominate the observed emission at wavelengths near and shor…
Is the Carter-Israel conjecture correct?
Cosimo Bambi, Katherine Freese, Rohta Takahashi
According to the Carter-Israel conjecture, the end-state of the gravitational collapse of matter is a Kerr-Newman black hole. Nevertheless, neither the theory nor observations can…
Oscillation Phenomena in the disk around the massive black hole Sagittarius A*
M. Miyoshi, Zhi-Qiang Shen, T. Oyama +2
We report the detection of radio QPOs with structure changes using the Very Long Baseline Array (VLBA) at 43 GHz. We found conspicuous patterned changes of the structure with P = 1…
Measuring spin of a supermassive black hole at the Galactic centre -- Implications for a unique spin
Y. Kato, M. Miyoshi, R. Takahashi +2
We determine the spin of a supermassive black hole in the context of discseismology by comparing newly detected quasi-periodic oscillations (QPOs) of radio emission in the Galactic…